| Fomes pini (Thore) P. Karst., 1882 |
| Fomes pinicola (Sw.) Fr., 1849 |
| Fomes pomaceus (Pers.) Lloyd, 1910 |
| Fomes portoricensis Overh., 1926 |
| Fomes pseudosenex (Murrill) Sacc. & Trotter, 1912 |
| Fomes resinaceus (Boud.) Sacc., 1891 |
| Fomes rimosus (Berk.) Cooke, 1885 |
| Fomes robiniae (Murrill) Sacc. & D. Sacc., 1905 |
| Fomes robustus P. Karst., 1889 |
| Fomes roseus (Alb. & Schwein.) Fr., 1849 |
| Fomes rubritinctus Murrill, 1903 |
| Fomes sagranus (Mont.) Murrill, 1908 |
| Fomes sclerodermeus (Lév.) Cooke, 1885 |
| Fomes supinua (Sw.) Cooke, 1885 |
| Fomes tsugae (Murrill) Sacc. & D. Sacc., 1905 |
| Funalia Pat., 1900 |
| Funalia polyzona (Pers.) Niemelä, 2003 |
| Funalia villosa (Sw.) Murrill, 1905 |
| Fuscocerrena Ryvarden, 1982 |
| Fuscocerrena portoricensis (Fr.) Ryvarden, 1982 |